ORIGIN AND RELATIONSHIPS OF ALPINIA GALANGA ( ZINGIBERACEAE ) BASED ON MOLECULAR DATA
ORIGIN AND RELATIONSHIPS OF ALPINIA GALANGA ( ZINGIBERACEAE ) BASED ON MOLECULAR DATA
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基于分子数据的高良姜（姜科）的起源和关系
DOI：
10.1017/s0960428600000020
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发表时间：
2000
影响因子：
--
通讯作者：
Q. Cronk
中科院分区：
文献类型：
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作者：
A. Rangsiruji;M. Newman;Q. Cronk
大高良姜是一种重要的烹饪香料，是该属的模式种。因此，它是一个成员组。山姜subsect。山姜（具非管状小苞片）。然而，分子系统发育分析表明，A。大高良姜与大高良姜A.黑在Allugha组（具管状小苞片）。该分支包括A. conchigera，得到了强有力的支持，自举值（BS）为100%，衰减指数（DI）>+6。这些结果是基于18 S-25 S核核糖体DNA的内转录间隔区（ITS）。该区域（405- 423 bp）来自17份材料，代表了16个分类群，包括15个山姜属种和一个外类群。内群之间的序列差异为0.5%~ 15.6%，内群与外群之间的序列差异为10.1%~ 13.3%。这些结果也有力地支持了A. rafflesiana和A.在Allughas组（BS= 100%，DI=>+6）中有javanica，整个组为并系群。高良姜组Catibium属为单系（BS= 100%，DI=+5）。另一方面，山姜组（Sect. Alpinia subsect.）山姜属（Alpinia）与山姜亚组（Sect. Alpinia subsect.）卡提姆。利用叶绿体DNA的trn L（UAA）3′外显子和trn F（GAA）之间的间隔区对一个类群进行系统发育分析，结果证实了A.大高良姜在Allugha组。A.大高良姜已经在Allugha组内进化，管状小苞片的缺失与山姜组趋同，可能是驯化下进化的结果。
Alpinia galanga is an important species cultivated as a culinary spice and is the type species of the genus. It is hence a member of sect. Alpinia subsect. Alpinia (with non-tubular bracteoles). However, molecular phylogenetic analyses suggest that A. galanga is closely related to A. nigra in sect. Allughas (with tubular bracteoles). This clade, which includes A. conchigera , is strongly supported with a bootstrap value (BS) of 100% and a decay index (DI) of >+6. These results are based on the internal transcribed spacer (ITS) region of the 18S–25S nuclear ribosomal DNA. The region (405–423bp) was sequenced from 17 accessions representing 16 taxa of Zingiberaceae , including 15 species of Alpinia and one outgroup. The sequence divergence ranged from 0.5 to 15.6% among the ingroup and from 10.1 to 13.3% between the ingroup and the outgroup. The results also strongly support the sister relationship of A. rafflesiana and A. javanica in section Allughas (BS=100%, DI=>+6), thus the whole section is paraphyletic. Section Alpinia subsect. Catimbium is monophyletic (BS=100%, DI=+5). On the other hand, sect. Alpinia subsect. Alpinia is paraphyletic (BS=100%, DI=>+6) with respect to sect. Alpinia subsect. Catimbium . The results from a phylogenetic analysis of a subset of the taxa using the spacer between trn L (UAA) 3′ exon and trn F (GAA) of chloroplast DNA confirmed the position of A. galanga in sect. Allughas . It appears that A. galanga has evolved within sect. Allughas and the absence of tubular bracteoles is a convergence with sect. Alpinia , possibly as a result of evolution under domestication.